OK, pulled the driver's door apart today. Pulled the lock actuator out. Sounds like the microswitches are working.
Here are the symptoms:
Trunk lock and unlock, all doors work.
Driver's door lock, no other doors lock.
Driver's door deadbolt, all doors lock.
Driver's door unlock, all doors unlock.
Passenger door lock, or unlock, no other doors lock or unlock.
Pulled lock actuator from the driver's door of a parts car I have, and no change, same behavior.
I disected the parts car actuator so I could see the microswitch. It looks good to me, but does not have voltage to it when connected ot the car, as measured with a test light. I wonder if this gives any clues.
I don't want to buy an actuator until I can be sure that's the problem.
1997 E36, 125K
1986 E30, 323K and counting.
Other vehicles: 99 and 96 Dodge Ram 2500's, 4x4 DIESEL. Twin turbos, 600 hp and 12's in the 1/4. I wish could afford a BMW with a diesel.